Apparatus for manufacturing glass articles.



N 0. 817,835. 7 PATENTEDAPR.17. 1906.

' J. H. UROSKEY. v

APPARATUS FOR MANUFACTURING GLASS ARTICLES.

; APPLICATION FILED MAY 10. 1905.

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APPLICATION FILED MAY 10. 1905.

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is AWE/7' 6 6%. @wzw w v A S A No. 817,885. PATENTED APR. 17, 1905.

J. H. OROSKEY. APPARATUS FOR MANUFACTURING GLASS ARTICLES.

APPLICATION FILED MAY 10. 1905.

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JOHN H. oRosKEY, or r r'rseuite, PENNSYLVANIA, ASSIGNOR TO DUQUESNEGLASS COMPANY,

A CORPORATION OF PENNSYLVANIA.

APPARATUS FOR MAN-UFAC m me GLASS ARTICLES.

$pecific'a'ti on of Letters iatent OF PITTSBURG, PENNSYLVANIA,

Eatented April 1?, 190's.

Applicatien filed May 10,1905. seen No. 259,752.

.710 at? 'zvhon'a 't may concern: 7 Be it'kmw'n that I, JOHN H. CRosKEY,a citizen ofthe United States,residing at Pittsburg, inthecoii'iity ofAlleghenyiand State of Pennsylvania, have invented certain new and,useful Improvements in Apparatus for Manufacturing Glass-Articles, ofwhich the followin'g'is a s ecification, reference being had therein tot e accompanyingdrawings,

forming part, of the specification, in which-w Figure 1 is a plan viewof my improved molding apparatus for plastic material. Fig: 2 is avertical section on the line-II II of Fig,

,1. Fig.8 is apartial view of the apparatus,

in side elevation, developed as though on a straight line, X 4 is apartial similar view showlng the spin e-rest lowered. Fig. 5 is a detailsectional 'view of the magnetic withdrawing device forthe plunger. 'Fig.6 is a planview thereof. Fig-.7 isa detailview, in

electrical contacting de- 1 the magnet. vFig. 8 is a partial detailview, in sectional elevation, of

tail "views, enlarged, of

one of the rotating thread-formingspindles with its actuatingstar-wheel. Fig. 9 is a. cross-sectional plan view on the line IX IX ofFig. 8. Fig. 10 is a detail of the lever for the'spindle-support. Figs.11 and 12 are dethe meehanismforlowerin the magnetic clutch for thespindles.

B y invention refers to improvements in apparatus for forming articlesof plastic nature, as glass, and is .particularly designed forthemanufacture of insulators for telegra h or other wires.

'lheinvention has in view the rapid economical manufacture .of suchdevices of uniof mechanism adapted to press the article in suitablemolds, together with a vertically reciprocating threaded plunger adaptedto be raised into suitable position and held there during the pressingoperation and to be removed by unscrewing after the: article is formed,so as to leave a threaded interior cavity and allow the finishedinsulator to be removed from the mold; The present invention-issimilar'in con struction and mode of operation to that shown anddescribed in my prior application,

[filed June 10, 1904, bearing'the Serial No'.

211,904, and refers more particularly to the mechanism, forunscrewingthe spindle, so as to provide-for a gradual preliminary opera tion and afinal rapid removing movement, as shall bemore'fully hereinafterdescribed.

Referring now to the drawings illustrating the invention, 2 representsany upon which the structure and suitable base, operative ele- Imentscomprising my invention are mounted.

3: is -a ball-race mounted upon the struo- Y tural framework 4, providedwith an annular roove adapted to support a series of bearingalls, asshown, upon which balls rests a turn-table 5, adapted to support andcarry the 1nolds.- These molds are'of the usual well-known construction,comprising a basemold 6, upon which sides of divided molds 7, as will bereadily understood, and-thesemolds are adapted to be intermittentlyrotated around upon the carrier'5, so as to bring e'ach. moldsuccessively beneath .a pressing-plunger 8 at the proper place and time.The table 5 is intermittentlyactuated 'by means of a spring-controlledpawl orlatch 9, mounted in the outer end of a swinging arm 10, actuatedbypitman 11 from crank-disk 12 on the upper end of shaft 13, driven bygearing 14 from main shaft 15."

The operation of this construction will be readily understood from Figs.1 and 2, and the turn-table is rotated thereby, the pressing operationbeing period'of rest occurringduring back travel of the pawl 9. Theplunger 8 is also reciprocated and pressed'downwardly into the mold 7 bymeans of a lever 17, connected 'with the. stem 18 of plunger 8 bysuitable links 19 and any convenient intervening cushioning de- VlCe,-Lsspring 20.

which also provides ger-rod, thelever extending engaging by a terminalroller with the groove 23 of a cam 24, mounted on the upper end of avertical shaft 25 and driven .throu h gearbackwardly and performedbetween each Lever 17 is pivoted at 21 on the upwardly-extendingstandard 22,

abearing for the plunare mounted the hinged ing 26 on main shaft 15, asclearly s own in 3 Fig. 2.

The exterior portions of, the insulator are entirely formed by molds 6and 7 and plunger 8, and for the purpose of providing theinternally-threaded cavity of the insulator l rovide avertically-reciprocating plunger 27, aving a threaded terminal 28, thelower portion of the plunger being vertically mounted in a bearing 29,depending downwardlyfrom the lower portion of the turn-table. It will beunderstood that, as shown, each mold is provided with its cooperatingplunger and that the plungers in their construction and operationare allthe same. The plunger is ordinarily in its lowered position, as shown atthe right of Fig. 3, at which point each plunger is vertically raisedinto the in old cavity by means of an independent raisingspindle 34,which in turn is'raised by a wiping-cam 35, mounted or secured upon adisk 36 at the outer end of shaft 15. This wiper-cam 35 is so arrangedthat it will gradually raise the lifting-stem 34, which abuts againstthe lower end of plunger 27, raising it to the desired height in themold and there holding it until the turn-table is again. intermittentlyactuated, when the plunger is carried around upon a receiving ledge orplatform 30, mounte upon standards 31 and capable of being raised andlowered by a lever 32, pivotally at tached at its inner end to anysuitable bearin and adapted to be set to a raised or lowere positionupon one or the other of supportingshoulders 33 in a suitable standardwith which the lever cooperates, as shown. The object of this mechanismis that the platform 30 may be normally held in the raised position tosupport the lower ends of the spindles,

which in. their subsequent travel around with the n'iachine areunscrewed, as shall beherein after described, and for the purpose ofproviding a supporting-bearing for the lower ends of the spindlescorresponding with their gradual lowering as unscrewed the platform 30is inclined downwardly, terminating at or about the' position where thespindles are located during the stationary period of the turn-tabledirectly over an unscrewing spindle 38. Prior to the final unscrewing ofthe spindles from the molded article it is desirable that they shallremain in the molded article suifieiently lon alter the pressingoperation to allow the g ass to become hardened, so that the unscrewingof the spindle will not distort the article, and for this purpose thespindles are preferably maintained in a non-rotating position until theyarrive at or about the point indicated by the letter A in Fig; 3.

For the pur ose of slowly unscrewing the spindle from t is point on Iprovide a series of pins or rack-abutments 39, mounted upon a suitablesu port 40, while each spindle is provided Wit a star-wheel 41 inratchet engagement with the spindle, as shown in Figs. 8 and 9, wherebythe star-wheel will act to reerases tate the plunger upon coming intocontact with the pins 39, but will ermit the plunger itself to beunscrewed in ependently of the star-wheel. For this final unscrewing Ihave provided the unscrewing spindle 38, vertically mounted in asuitable standard 42, lo cated underneath the turn-table at theappropriate position and capable of an up-an down movement therein.provided at its upper portion wit teeth 43, adapted to engagecorrespondin teeth on the lower end of each spindle 27, while for thepurose of insuring a downward pull on spindle 27 I rovide a magnet 44,adapted to be energized at the pro er time through connections 45, whichin t e raised osition of the spindle come into contact wit terminals asof an energizing-current connected. therewith from. battery 47 or anysuitable source of electric energy. Spindle 38 is constantly rotated bymeans of bevel gearing 48 49, driven through s rocket-gearing 50 fromthe main shaft, as s iown, bevel 48 being in spline engagement withspindle 38, so as to rotate at whatever vertical position it may assume.Normally spindle 38 is held raised by a counterweighted lever 51,engaging the spindle, as shown in Fig. 3, and for the purpose ofdepressing the rotating spindle 38 at the proper time, so as tocompensate for the unscrewing downward motion of s indle 27, I providethe mechanism shown in detail in Figs. 1 1 and 12. This constructioncomprises a verticallymovable arm 52, extending over the top of magnet44 or any suitable portion thereof or of s indle 38, said arm 52extending outwar ly form a vertically-reciprocating standard 53, mountedin suitable hearings on the machine.

Standard 53 is intermittently lowered by means of a bell-cranklever 54through link55, lever 54 being pivoted at 56, extending up wardly andengaging by a suitable collar 57 a horizontally-disposed shaft 58, whichis nor mally projected ackwardly against acam 59, mounted on themainshaft 15 by means of a compression-spring 60, as shown. The innenend of shaft 58 is preferably provided with a roller 61, hearing againstcam 59. By this construction as cam 59 rotates it intermittentl lowersarm 52, depressing the rotating spindle 38 to a degree of downwardtravel corresponding with the movement oi" the s indle 27, and by meansof this mechanism the threaded plunger is quickly lowered away from thefinished article. In the farther travel of the turn-table the threadedplungers will remain inoperative until again arriving at the pressingposition, where they are again raised into the mold-cavity, has beendescribed, the ooeration being repeated for the next and followingrotations of the table.

The s indle 38 is The operation of the apparatus will be readilyunderstood from the foregoing description, and while the machine isparticularly adapted to the manufacture of insulators it is obvious thatother devices may be made of a similar nature, or it may be, adapted toother forms wherein it is desirable to form a threaded cavity.

Changes and variations may be made in its design, construction,proportions, or various details by the skilled mechanic; but all suchchanges are to be considered as Within the scope of the followingclaims.

What I claim is- 1. Apparatus for forming articles of glasswareconsisting of a rotatable mold-carrier provided with acircularly-arranged series of molds, a pressing-plunger arranged tocooperate with said molds in rotation, a series of oppositely-disp0sedthreaded plungers mounted in the mold-carrier, an independentplunger-raising spindle, means for unscrewing the threaded plungersoperated by rotation of the mold-carrier, and means for slidinglysupporting the plungers, substantially as set forth.

Apparatus for forming articles of glassware consisting of a rotatablemold-carrier provided with a circularly-arranged series of molds, apressing-plunger arranged to cooperate with said molds in rotation, aseries of oppositely-disposed threaded plungers mounted in themold-carrier, an ind ependent' lunger-raising.spindle, means forunscrewing the threaded plurigers operated by rotation of themold-carrier, and vertically-adjustable means for slidingly supportingthe plungers, substantially as set forth. 3. Apparatus for formingarticles of glassware consisting of a rotatable mold-carrier providedwith a circularly-arranged series of molds, a pressing-plunger arrangedto cooperate with said molds in rotation, a series ofoppositely-disposed threaded plungers mounted in the mold-carrier, anindependent plunger-raising spindle, means for unscrewmg the threadedplungers operated by rotation of the moldcarr1er, and means for slid--ingly supporting the plungers, witlrmeans adapted to engage each spindleandto unscrew it finally from the mold during the stationa periodthereof, substantially as setforth.

4. The combination with an intermittently-rotatable mold-carrier, aseries of stationary abutments, and a series of verticallyarrangedthreaded plungers provided with devices adapted to engagesaid abutmentsto unscrew the plungers; of independent means adapted to engage eachplunger and to finally unscrew it from the mold during the stationaryperiod thereof, substantially set forth.

CELVItY,

.therein, and means for 5. The combination with anintermittently-rotatable mold-carrier, a series of stationary abutments,and a series of verticallyarranged threaded plungers provided withdevices adapted to engage said abutments to unscrew the plungers, andhaving toothed extremities; of an independent verticallymovable spindlehaving a toothed extremity adapted to engage the "lower end of eachplunger and to finally unscrew it during the itationary period thereof,substantially as set orth. 6. The combination with a rotatablemoldcarrier, a series of stationary abutments, and

a series of verticallyarranged threaded plungers provided with devicesadapted to engage said abutments to unscrew the plungers, and havingtoothed extremities; of an ind ependent vertically-movable spindlehaving a toothed extremity adapted to engage the lower end of eachplunger and to finally unscrew it during the stationary period thereofat an increas d speed, substantially as set forth. I

7. The combination with a threaded plunger provided with a toothedextremity; of a vertically-movable rotating spindle provided with acorresponding toothed extremity and an energizing-magnet, substantiallyas set forth.

8. The combination with a threaded plunger provided with a toothedextremity; of a vertically-movable rotating s indle provided with acorresponding toother extremity and an energizing-magnet, with meansadapted to energize said magnet and means to rotate it, substantially asset forth.

9. The combination With a series of fixed abutments and a rotatingmold-carrier; of a threaded spindle extending into the mold: providedwith a star-wheel arranged to engage said abutments andhaving ratchetmechanism permitting the spindle to be rotated independent of thestar-wheel, substantially as set forth. V

10. The combination with a series of fixed abutments and anintermittently-rotating mold-carrier of a threaded spindle extendinginto the m0ldcavity, provided with a star- Wheel arranged to enga e saidabutments and having ratchet mec hanism permitting the spindle to berotated independent of the star-wheel, said spindle being a toothedextremity; and independent means adapted to register with the spindle inits stationary position, and to rotate and finally remove it from themold-cavity, substantially 4 grzo 11. The combination with a rotatableas set forth.

mold-carrier, a series of threaded spindles gradually unscrewing saidspindles; of a vertically-adjustable inan a smear? clined shelf arrangedto support said spindles with means arranged te raise ea'cli spindle i6and to permit of their gradual lowering travel, above the level of saidshelf, substantially as substantially as set forth. set forth. 12. Thecombination with a rotatable In testimony whereof I afiiX my signaturemold-merrier, a series of threaded spindles in presence of twoWitnesses.

therein, and means for gradually unscrewing JOHN H; CROSKEY.

said spindles; of a vertically-adjustable in- Witnesses; v

clinecl shelf summed to support said spindles CHAS. S. LEPLEY,

and to permit of tieir gradual lowering travel, 0. -M. CLARKE.

